When a fine is entered against a witness for failure to appear and testify, the judgment shall be conditional; and a citation shall issue to him to show cause, at the term of the court at which said fine is entered, or at the first term thereafter, at the discretion of the judge of said court, why the same should not be final; provided, citation shall be served upon said witness in the manner and for the length of time prescribed for citations in civil cases.
Tex. Code Crim. Proc. § 24.07